I have a problem connecting to a network as the username location is greyed out.
I tried this solution below and set to classic, still I cannot enter my username.
Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)
This means that anonymous logon is enabled and by default it take only
'Guest' user. You need to edit some settings on the machine you are
connecting to as follows:
1) Start -> Run -> secpol.msc
2) Goto Security settings -> Local Policies --> Security options
3) For the policy 'Network access:Sharing and security model for local
accounts' change the security setting to 'Classic'
4) Save the settings